Those "throwaway bits" are empty . . . useful only as "processing space". You're not going to find signal anywhere with noise much (if any) more than 16 bits below peak signal . . . we may wish for noise-free microphones and pre-amps, but they don't exist. So with 24 bit transport (and higher bit depth for internal processing) you can always "gain adjust" down by 2,3 or 4 bits and not lose anything at all (if the source has been adjusted to put peak signal at 0dBFS, which all commercial offerings have).
If you are going to apply boost in the digital processing (dipole compensation, for example) you always drop input signal first to allow the necessary headroom to avoid clipping . . . all your outputs will then retain "normalized" levels. If you're then feeding speakers it's always best to normalize amp/driver sensitivity . . . it avoids all sorts of potential problems and makes troubleshooting much easier.
Soon to release after an eternity of waiting, Hypex DLCP looks good to my untrained eyes as a digital crossover. Only six channels out though.
http://www.diyaudio.com/forums/digital-line-level/164277-hypex-dsp-module-s-4.html#post3272989
http://www.diyaudio.com/forums/digital-line-level/164277-hypex-dsp-module-s-4.html#post3272989
That would be me. I had 8554s left over from the original Phoenix project. John was gracious enough to offer to adapt the RS to these drivers. Needless to say I've already ordered the the plans.
???
Quote from your site :
"Summary of the revised NaO Note II RS:
Format: 4-way, fully active speaker.
Woofer system: Two Peerless SLS 830668 coated paper cone woofers per speaker in a damped U-frame quasi-cardioid format."
So which is it? Damped U frame (cardioid) or H (N) frame (dipole)? Or do you have plans for both ?
Quote from your site :
"Summary of the revised NaO Note II RS:
Format: 4-way, fully active speaker.
Woofer system: Two Peerless SLS 830668 coated paper cone woofers per speaker in a damped U-frame quasi-cardioid format."
So which is it? Damped U frame (cardioid) or H (N) frame (dipole)? Or do you have plans for both ?
???
Quote from your site :
"Summary of the revised NaO Note II RS:
Format: 4-way, fully active speaker.
Woofer system: Two Peerless SLS 830668 coated paper cone woofers per speaker in a damped U-frame quasi-cardioid format."
So which is it? Damped U frame (cardioid) or H (N) frame (dipole)? Or do you have plans for both ?
Quote from your site :
"Summary of the revised NaO Note II RS:
Format: 4-way, fully active speaker.
Woofer system: Two Peerless SLS 830668 coated paper cone woofers per speaker in a damped U-frame quasi-cardioid format."
So which is it? Damped U frame (cardioid) or H (N) frame (dipole)? Or do you have plans for both ?
It's a dipole. I must have missed on place where I still referred to the u-frame. Will correct. Thanks for noting it.
[edit] corrected.
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Exactly. Whis is why I went to the all active system and a single, 8" lower mid.
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I was, for a while. I was not satisfied with the performance of the dipole woofers. Then I loaded the XXLS woofer in the N-frame dipole and they performed as expected. So I took another look at the SLS N-frame dipole and found it came down to a couple of bi-quad coefficients which some how got corrupted when I loaded them into the miniDSP. Once corrected things worked out as I had anticipated. So N-framer dipole it is.
if you have a minidsp you could put it before my active crossover for the Note. Make one output of the minidsp a pass through just to get the miniDSP delay and use that as the input to my active crossover.Then use the panel out for my active crossover to driver the Note panel amp. Use the second output of the miniDSP to configure the woofer system and drive the woofer amp directly off the miniDSP. The woofer should have an LR4 acoustic LP at 120 Hz.
In fact I reckon they look pretty cool in that special DIY prototype finish with the masking tape holding the tweeter waveguides on !
Good thing there is no photo of the crossover put together in matching style.